**Ensure you have your bootloader unlocked**Flash the latest TWRP Recovery and do a NANDROID backup before flashing ROM**Download ROM from link below and Gapps if required and ensure they are on your phone's internal storage**First install of any ROM requires a full wipe (Data, System, Cache, Dalvik)**Flash along with any other zips required, including Gapps, and reboot**Upgrades to existing ROMs can be dirty flashed but wipe cache and dalvik before reboot